My Sony T68i cellphone has been very unreliable (I am now onto the 3rd handset after 2 failed). I use it primarily for GPRS with my iPaq 5550 and as a sort of walkie-talkie with my wife. Voice use is minimal. It is connected to the Orange network in the UK.
I am able to upgrade this for free, now that I have had it for a year. The two main contenders seem to be the T610 (more of the same) or the Motorola V600. I am interested in the V600, I like the flip design and it seems to offer all the Bluetooth I need.
A review I read hinted that the BT modem implementation on the V600 was a bit strange and I wondered if anyone had actually used one of these with a PPC for GPRS Internet access? The Orange "Trainers" look at you blankly when asked a question like that.